Invasive/Damaging Core Sample Testing
Non-invasive / Non-Destructive Electrical Conductivity Testing
To determine the authenticity of gold bullion – non-destructively and therefore without loss of value – its electrical conductivity is measured using the eddy current method according to ASTM E 1004. This method utilizes the physical fact that fine gold, various alloys and foreign material will all differ in their conductivity, therefore allowing forgeries to be detect
X-ray Fluorescence Analysis (XRFA)
Iis a suitable complement for accurately determining composition(s).
Besides the obvious basic methods of testing.....
Size-Weight-Volume Displacement Testing
Magnetic Gause Field Testing
Thermal Conductivity Testing
Core Sample Swirls Acid Testing